hydro electricity is still the most dominant clean-energy source, representing 58 per cent of all renewable electricity generated in 2012.

other sources were growing strongly, with wind energy rising to 26 per cent of renewable generation and solar to 8 per cent.

Despite the growth, the report also found that Australian investment in renewables fell by $1.3 billion dollars last year, from $5.5 billion in 2011 to $4.2 billion. Much of the decline in investment came in solar, as government incentives to install rooftop panels were axed and the cost of systems fell. The fall mirrors a 10 per cent decline in renewable energy investment globally in 2012.